Dude, the contest is open to anyone who wants to whip it out and get voted on. If you are having an issue with it then don't do it. If you have a problem with your penis size or don't think your entry will get a flattering number of votes then don't do it. If it's sending you into a lower circle then maybe seeking therapy is best.
It is open to anyone who wants to whip it out and get voted on. It's not for everyone, but it's open to everyone. I wouldn't get into a 'whip it out' competition against a Falcon superstar and complain it's unfair but if I were an exhibitionist I'd get in the competition because showing it off would make me feel good.
If you want to join, do it, if you don't want to, don't do it.